METHOD OF OBTAINING POLYARYLATES Russian patent published in 2015 - IPC C08G63/18 C08G63/183 C08G63/193 

FIELD: chemistry.

SUBSTANCE: claimed invention relates to method of obtaining polyarylates. Described is method of obtaining polyarylates by emulsion polycondensation, which includes preparation of organic-water-salt-alkali (THF-H₂O-NaCl) solution of bis-phenol, cooling said solution to (10±4)°C, and introduction of melt of chloroanhydrite of aromatic dicarboxylic acid into it with intensive mixing, precipitation, washing and drying of target product, characterised by the fact that polyarylate-matrix is supplied at the stage of bis-phenol solution preparation simultaneously with bis-phenol in amount from 0.75 to 1.3 wt. p. per 1 wt. p. of bis-phenol, with neutralisation stage and precipitation being performed simultaneously by supply of acid (neutralising agent) and water (precipitating agent) into reaction medium.

EFFECT: obtaining high-molecular-weight polyarylate with improved exploitation characteristics.

3 cl, 2 tbl, 6 ex